Mining machine



, 1924. D. S. ALL-.ISSN

July 8 MINING MACHINE Original Filed Jam 23, il Sheets-h i juve l uvi di f ww N Patented .liily 8, 1924.

` isernia PATENT ortica;

DAVID SCOTT ALLISON, E SALT LAKE CITY, lIITAH, ASSIGNORKTO SULLIVAN MACHIN- ERY COMPANY, A CORPORATIGN OFV MASSACHUSETTS.

ivIINING MACHINE.

Y Application led January 23. 1918.- Serial No.`213,280.

To @ZZ whom 2f may 'conceit/i.' f f Be it known ythat I, DAvID SCOTT LLisoN. a citizen of the United States, residing at Salt Lake City, inthe county of Salt Lake and State of Utah, have invented certain new and useful Improvementsin Mining Machines, of which the following is a full, clear, and eXact specilication.

My invention relates to mining machines.

It has for its objectto provide an iniproved` mechanism for cutting a kerf in the material to be mined in ar. improved manner whereby that material may be subsequently removed with greater facility. A further object of my invention is to provide an improved mining machine adapted to cut a relatively wide kerf and thereby, when the coal is shot, cause the same to be rolled forward and broken up in such a manner as greatly to facilitate the loading operation. These and other objects and advantages of my improved construction will, however, hereinafter more fully appear.

In the accompanying drawings I have shown for purposes of illustration one embodiment which my invention may assume in practice.

In these 'drawings,'- e

Fig. .1 isa side elevation, partially in section, of a mining machine equipped with my improvement. e 4 1 2v is a partial side elevation of the machine shown in Fig. 1, portions of Ythe same being broken away to illustrate the operating mechanismf` l p Fig. 3 is a detail View of one of the bearings for the supplemental cutting element.

Fig. 4l is a diagrammatic view showing my improved machine ready to make its sumping or staiting cut.

4F ig. 5 is a similar" view showing the inachine after it has been sumped into the coal.

`Fig. 16. is a similar view showing the machine'at the end of its transverse cut. l

In'this illustrative construction,l I have Vshown my invention applied .to a self-propelled mining machine of a standard form e ivliich is herein shown to include a frame 1 mounted upon a suitable shoe 2 and provided with a forwardly extending cutter bar 3 equipped with the usual cutter chain 4. As usual in such machines, a motor 5 is carried vby the frame 1, and connected through suitable driving connectionsxwith a cutter chain driving sprocket and any suitable" feeding meansv adapted to use in propelling the machine during its different operations. In this illustrative construction, it will. be noted that the motor 5 is connected through gears 6 and 7, a shaft 8,

vand gears 9 andflO, in such a manner as to drive a cutter chain driving sprocket 11, and that the gear 10 is also connected through usual friction controlled reduction gearing (not shown) operatively connected between the upper endof the shaftY 1270i' the gear l() and the upper end of ay shaft 13 ,carrying a feed driving member 14, herein shown in the form of a sprocket, adapted to act upon a fiexible feeding member or chain 15. As usual,the operation of each of these velements 11 and 14 is also of course con- `trolled by the usual controlling mechanism (not shown).

In my improvement, it will 'besobserved 4that a supplemental' cutting' element v1GV is provided, Vwhich isdisposed above the cutter chain llanvd at an 'angle thereto, and preferablycentrally of the cutter bar, in' such a manner 'asf to cooperate therewith in cutting a relatively wide, and herein substantially V-shaped, kerf which opens out toward ythe face VIn; thek forml `of my inventionA jshown,this supplement-al cutting element is in-the' form of a rotating rcutter bar, preferably tapered toward its frontend, and

'havingia plurality of` cuttervteeth 17 on its periphery, the saine'herein being shown as disposed in a plurality of parallel series, al-

though obviously other arrangements of these teeth may be utilized if-desired.V This bar, as shown, isalso preferably disposed at such an angle relative to the cutter bar o Vas to bring its front end adjacent the bar at a point intermediate the ends of the latter, and preferably slighlyk nearer the front end thereof. In a preferred form, the front end of this rotating bar also extends into asuitable centrally located aperture 18 in the bar V3 and is provided with a reduced portion 19 adapted to be received a suitable bearing 2O located in said aperture. As shown, the upper end ofthe rotating bar is also preferably journaled in a suitable bearing 21 carried onthetop of the frame `1 and atV the front end thereof, the two bearings 2O and 21 thus cooperating to forma rigid construction. In a preferred'form, the supplemental cutting element is salso preferably con-1 tal cutting element to be driven from the motor 5, the same being provided for this purpose with a shaft 22 which extends rearwardly and upwardly from the bearing 21 and is journaled ina suitable support 23 carried on the upper surface ofthe frame 1. As shown, this shaftf22 is also connected through beveled gearing 24, housed in a suite able 'casing 25, with a removable extension 26 carriedon the upper end of the shaft 8. Thus, it will be observedthat as the shaft of the motor 5 is rotated to rotate the chain driving sprocket 11, the rotation thereof is transmitted through the shaft 8 to the gear 24 and the shaft y22 to the supplemental cut- 'ting element 16, in 'such a manner as to-cause the latter to Vrotate simultaneously therewith.

In the operation of my improved construction, it will be evident thatwhen the feeding ement 15 is connected in a well known manner to theface,'fas,for instance, shown inFig. 4, the machine may be sumped in under the coal as a unit in the usual manner to cutl a complete or full depth kerf in one operation, the supplemental cutting element 16 then rotating and cutting out its Vown path as the Vmachine is moved bodily to the left from'the'p'ositio'n shwni'n'Fig. '4 to the position shown in Fig. 5. After this p0- sition has been 'reached and thefie'xible feed- 'ing element hasbeen connected as shown in Fig 6, in preparation for .the transverse y movement of the machine, the latter may then also beoperated as a unit i'n the usual manner to'malte its transverse cut. During this cut, however, it will be observed that -as a result of the 'action'of the supplemental :cuttingelement 16 and its cooperation with the cutter chain 4, a V-shaped lerf will be cut in the face. vIt will also be noted that the coal between thesescutting elements 4 `and 16 'is broken upfdue' to the simultaneous operyation ofthe two lcutting elements on the opposite sides of the lsamefObviously, when the machine reaches the opposite rib i. e. when the vsamecompletes its transverse cut, the machine may then be operated as is usual in squaring up the rib.

Asv a result of my improvement, it will be observed*thatffam able to produce a relatively wide kerf of such a character that when' the coal is shot from vthe top, as in the usual' lshooting operation, the same is caused to be both rolled forward and' broken up, in

'such a manner as greatly to facilitate loading, and especially machine loading So far as the machineis concerned, itwill also be noted that it is possible to' apply my invention to an undercutting machine of standard construction with only slight changes there in, and to removethe wide kerf cutting attachment whenever it is desired to undercut a kerf of standard dimensions, as by simply removing the bearings 21, 23, disconnecting the supplemental shaft 26, and withdrawing the cutting element 16 from its socket 20. These and other advantages of my improved construction will, however, be clearly apparent to those skilled in the art.

lhile 1 have in this vrapplicationspecifically described one embodiment which my-invention may vassume in practice, it `will be understood that t-hisform of 'ithesame is used for purposes of illustration, and that the invention may be modified 'and embodied in other forms without departing Lfromit's spirit or the scope' of theappended claims.

vVhat 1 claim as new and'desire tosecure by Letters Patent is:

1. 1n a mining'ma'chine, Vaframe slidable onV a mine b-ottoni,'1ncans for lsumpingthe same, and means comprising a plurality'of cooperating relatively movable cuttercarn rying elements thereon for cutting in one sumping operation a full depthkerfhaving an inclined surface.

2. In a mining machine, :a frame'sli'dable on a mine bottom, and means comprising a plurality of cooperating relatively m'ovable cutter carrying Yelements thereon for cutting out in a single transverseoperation a substantially `Vshaped- 'full depth lkerf disposed transversely of a face.

'8. I'n amining macl'ii'n'e, a frameslidable on a mine bott'om,'a plurality"offintersecting cutting elements thereon movable thereN with and disposed in intersecting planes, and ymeans for sumping saidv elements full length into the work inon'e operation.

4. In a mining machine, a frame slidable on a mine bottom, and relatively 'angularly disposed undercutting elements projecting forwardly therefrom and adapted 'to cut a full depth transverse kerf inon'e operation as said frame is movedV transversely of a face.

5. In a mining machine, a frameslidable on a mine bottom,relatively" inclined 'undercutting'el'ements movable therewithfandprojecting forwardly therefronrand cooperating to form a single l'erf, and feeding means operative vto successively 'sump and transversely move said frame during cutting.

6. ln a mining machine, a frame slidable on a mine bottom, anda plurality of un dercutting Velements thereon, one disposed at an angle relative tothe horiaontaland supported on the other side of said-'frame' In a mining machine, a frame `slidable on a mine bottom. a plurality of intersecting relatively inclined and relatively f movable cutter carrying' elements movable therewith, a motor on 'saidframe, vand means for simultaneously driving each of said cutter carrying elements therefrom. Y

8. Iii-a mining machine, a frame, and means for cutting a single kerf including a plurality of relatively inclined undercutting elements on said frame, each carrying a plurality of cutters and one disposed in a plane intersecting the other at a point intermediate its ends. n

9. In a mining machine, a frame, and means for cutting a single kerf including a plurality of relatively inclined undercutting elements on said frame,V each carry ing a plurality of cutters and one disposed in a plane intersecting the other at a point adjacent its front end but in rear thereof.

10.`In a mining machine, aframe, cutting mechanism Athereon including a cutter bar and cutter chain, a supplemental relatively inclined cutting element, and

means for sumping said cutter elements full c length into the face in one operation. i

11. In a mining machine, a frame, Aa cutter bar and cutter chain thereon, a supplemental angularly disposed cutting element having its front end disposed adjacent the plane of said bar, and means for cutting a full depth transverse kerf with said elements during one transverse movement thereof. v

Y 12.. In a mining machine, a frame, av cutter bar thereon, acutter chain on saidbar, and Aa rotating cutter bar-carried on said frame and disposed in inclined positionwith respect to said first named bar.

13.k In a mining machine, a frame, a cutter Vbar and cutter chain thereon, chain operating mechanism, a supplemental cutting element inclined relative to said bar, and operative connections between the same and said operating mechanism.

I ltIn a mining machine, a frame, a cutter bar and cutter chain thereon, a rotating cutter yb-ar disposedabove said first named bar and inclined relativethereto, and means for operating said cutter chain and said rotating bar.

15. In a mining machine, a frame,.a cut- .ter bar and cutter chain thereon, a rotating cutter bar disposed above said first named bar inclined relative thereto and having one end intersecting the plane of cut thereof, and means for simultaneously operating both said cutter chain and said rotating bar.

16. In a mining machine, a. frame, kerf cutting mechanism thereon, a relatively inclined and cooperating kerf cutting element driven by said mechanism and cooperating with said cutting mechanism to form a single kerf, and means whereby said element may be applied to or removed from said frame at will.

17. In a mining machine, a frame, kerfV driven by said operating mechanism, and an inclined cooperating kerf cutting element likewise operatively connected to said operating mechanism and cooperating with said undercuttiiig mechanism to cut a single kerf.

18. In a mining apparatus, a complete mining machine having a cutter bar and slidable on a mine bottom transversely of a face, and relatively movable means thereon cooperating with said bar to cut in one transverse movement of said machine relative to the face a single transversekerf of full depth and having an inclined upper surface. f

19. In a mining apparatus, a frame slidable on a mine bottom, means for sumping and moving the same transversely, and meanson saidk frame comprising a plurality of elements 'carrying relativelyV movable cutters simultaneously operative during Va single sumping movement of said frame and a lsingle subsequent transverse movement thereof to insert a full depth undercut ina face and simultaneously slope toward the face the upper wall of the kerf adjacent the face. I Y

'20. In a mining machine, a frame slidable on a mine bottom, a plurality of relatively inclined cutting elements thereon, each carrying a plurality of cutters movable relaon aimine bottom, a plurality of relatively angularly disposedcutting elements thereon, each carrying a plurality of cutters'inovable relative to thecutters on the other, amotor on saidV frame, means for simultaneously driving each of said cutting elements from said motor, and feeding means likewise driven by said motor for feeding said frame when said cutting elements are at full depth in'a face, transversely of the face.

22, In a mining machine, a frame slidable on a mine bottom, a plurality of relatively aiigularly disposed cutting elements thereon, each carrying a plurality of cutters movable relative to the cuttersoii the other, a motor on said frame, means for simultaneously driving each of said cutting elements from said motor, and feeding means likewise driven by said motor for successively sumping said cutting elements full depth into a face and feeding said frame bodily transversely thereof.

23. In a mining machine, a complete mining machine slidable on a mine bottom and including a cutter bar, a cutter chain movable about the same, flexible feeding mechaass nism driven by said machine during successive sumping and transverse feeding operations for sloping toward the face the upper Wall of a kerf out bysaid machine.

24. `In a mining machine, a complete mining machine slidable on a mine bottom and includinga cutter bar, a cutter chain movable about the same, flexible feeding mechanism for successively sumping and feeding said machine relative to a face, yand mechanism driven by said machine during successive sumping and transverse feeding operations for sloping toward the face the upper Wall of a kerf cut by said machine, said mechanism being removable at will to permit said machine to operate in its usual manner. c

U25. A mining machine slidable relative to a mine bottom and having a cutter bar projecting therefrom, ,feeding means for feeding said bar into and transversely along a face to insert in one operation a full depth transverse kerf, and supplementary means driven by said machine and carried thereby lfor in the saine operation cutting Vaivay a portion of therface adjacent to and above the end of said bar adjacent the machine to form a surface facilitating the rolling out of the face after shooting.

n 26. 4In a mining machine, a frame slidable on a mine bottom, means for feeding said fra-me during sumping and cut-ting across a face, and cutting means on said frame operative during sumping to cut a. triangular kerf in a vertical plane and during cutting across a face to cut intersecting plane kerfs forming a dihedral angle Whose plane angle is equal to Vthat-angle of said triangular kerf which: is opposite the Working face.

27. In a mining machine, a frame slidable on a mine bottom during cutting, means for feeding said frame bodily over said bottom during sumping and cutting, and cutting means on said frame operative during sumping to out a polygonal kerf and thereafter -on propulsion of said framebodily across the face during cutting to cut kerfs Whose planes are parallel to certain of the sides of a similar polygon.

28. In a mining machine, a frame movable rectilinearly in different directions .during cutting, and cuttingineans thereon for outting intersecting kerfsincluding cooperating elongated cutting elements each operative to cut With its major dimension-disposed in a plurality of substantially different relations to the direction of frame movement.

29. In a mining machine, a'lframezslid-able on a mine bottomrduring cutting, means'for feeding said frame bodily over said bottom during sumping and cutting, and cutting means on said frame operative Aduring sumping to cut a polygonal kerf and thereafter on propulsion of said frame bodily across the face during cutting to cutker'fs Whose yplanes are parallel to certain of the sidesgof a similar polygon, said cutting means including substantially horizontally disposed means for cutting one of said second mentioned kerfs, and means 'disposed at an angle to said last mentioned means and intersecting the same ata point relatively remote from saidframe for cutting another of said second mentioned kerfs.

30. In a mining machine, a frame slidable on a mine bottom during cutting, 'means` for feeding said frame bodily over said bottom during sumping and cutting, and cutting meanson said frame operative during'sum'pingto cut a polygonal kerf and thereafter on propulsion of said frame bodily across the face during cutting to cutker'fs Whose planes are parallel to certain of the sides of a similar polygon, said cutting means including a substantially horizontally disposed cutter chain carrying cutter bar and a rotating cutter bar making an anglewith the plane of said first mentioned cutterba'r at a point remote from its rear end.

In testimony whereof I aliix -my signature.

Davila .sooTT ALLIsoN. 

